Improvement in rotary fan-wheels



TQHJWALTON.

Improvement in Rotary Fan-Wheels.

"No. 131,238, 7 Patented Sep.10,1872.

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wtuwmz 3mm; 4 175 Wm 9% i rm 7 UNITED STATEs THOMAS H. WALTON, OFASHLAND, PENNSYLVANIA.

lMPROV EMENT m ROTARY FAN-WHEELS.

Specification forming part of Letters Patent No. 131,238, datedSeptember 10, 1872.

OAsE B.

Specification describing a new and useful Improvement in RotaryFan-Wheel Exhausters, invented by THoMAs H. WALTON, of Ashland, in thecounty of Schuylkill and State of Pennsylvania.

This invention relates to a new and useful improvement in apparatus forexhausting air from coal and other mines, and for all the purposes forwhich it may be adapted; and it consists in the construction of therotating wheel and wheel-plate, and arrangement thereof in regard to theopening which communicates with the .mine or shaft of the mine, thearrangement being as hereinafter more fully described.

. In the accompanying drawing, Figure 1 rep resents a sectional sideelevation of my exhauster in connection with the opening to the mine.Fig. 2 is a face View of the rotary wheel detached.

Similar letters of reference indicate corresponding parts.

A is the wheel, which is fastened to the shaft B, and driven by means ofa belt on the pulley O. In this example of my invention I attach aplate, D, to the back side of the wheel, but the plate may be separatefrom the wheel and remain stationary, but nearly in contact therewith. Erepresents the opening from the mines,.shaft, or compartment from whichthe air is to be exhausted. The wheel A is designated to be equal indiameter to the diameter of this opening, and the circumfer ence of thewheel is open to the surrounding atmosphere. The air exhausted or drawnfrom the mine takes the course indicated by the arrows. If it is desiredto conduct the air which is exhausted in any particular direction theremay be a casing over the fanwheel. The opening E to the mine may be lessin diameter than that of the wheel 5 but to secure all of the advantagesof the wheel those diameters should be equal. The paddles or vanes ofthe wheel should reach the shaft, as represented in the drawing.

I do not confine or limit myself to the precise form or arrangement ofany of the parts described, as variations may be made without departingfrom my invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The fan'wheel A, having radial wings open on itsperiphery and next the shaft, but having plate D on one side, combinedwith shaft E, as and for the purpose described.

THOMAS HUNTER WALTON.

Witnesses:

CHAs. W. HARTMAN, T. F. BARRON.

